MICROCAPSULE CONTAINING ANTIOXIDANT, ANTIOXIDATION MEMBER CONTAINING THIS MICROCAPSULE AND SOLDERING METHOD USING THIS MICROCAPSULE

摘要

PURPOSE: To make it possible to form a nonoxidizing atmosphere for soldering purposes. ;CONSTITUTION: Microcapsules 1 are incorporated into a flux 4 stored in a flux tank 3. An inert gas is sealed in these microcapsules 1. The flux 4 into which the microcapsules 1 are incorporated adhere to the prescribed points of a printed wiring board 5 passing the flux tank 3. The shells of the microcapsules 1 which come into contact with molten solder 7 are melted and deformed and the inert gas is released when the printed wiring board is moved to a soldering stage in this state. Consequently, the nonoxidizing atmosphere 8 is formed and the good soldering is executed in the atmosphere.;COPYRIGHT: (C)1996,JPO